Technologies

The 12W700 meets the specific market requirement for a
loudspeaker which combines the excellent linearity, good efficiency
and high power handling of the 15W700 model but in a 12 inch
(300mm) chassis for use in more compact systems. It is primarily
intended for application in compact reflex and band-pass
enclosures but can also be used for horn loaded configurations.
The ribbed curvilinear paper cone has been made from a special
high strength woodpulp designed to achieve the best possible
linearity within its intended frequency range and to control
bell-mode resonances around the cone circumference. The cone is
carried by an unusually deep profile, triple roll suspension made
from a polycotton material which is more resistant to aging and
fatigue than traditional cotton-based ones.
The 75 mm (3 inch) diameter voice coil employs the Interleaved
Sandwich Voice coil (ISV) technology, in which a high strength
fiberglas former carries windings on both the outer and inner
surfaces to achieve a mass balanced coil. This results in an
extremely linear motor assembly with a reduced tendency for
eccentric behavior when driven hard.
The magnetic structure has been optimized using FEACAD resource
to maximize the flux density in the voice coil gap.
Voice coil cooling has been achieved by incorporating airways
between the chassis back plate and the top plate of the magnet,
allowing heated air from the voice coil and gap to be channeled
away and dissipated by the chassis basket.
Due to the increasing use of audio systems at outdoor events, the
ability to perform in adverse weather conditions or in high-humidity
areas is an essential feature of the 12W700. This has been achieved
using an exclusive cone and magnet plate treatment process which
increases resistance to corrosion and renders the cone water
repellent.

Specifications

Design

Parameters

Mounting and Shipping Info

Nominal Diameter300 mm ( in)

Nominal Impedance8 Ω

Minimum Impedance7.0 Ω

Nominal Power Handling1450 W

Continuous Power Handling2700 W

Sensitivity398.0 dB

Frequency Range55 - 4200 Hz

Voice Coil Diameter75 mm (3.0 in)

Winding Materialaluminum

Surround ShapeTriple roll

Cone ShapeCurvilinear

Magnet MaterialFerrite

Woofer Cone TreatmentWeather protected

Recommended Enclosure70.0 dm3 (2.47 ft3)

Recommended Tuning60 Hz

Resonance Frequency58 Hz

Re5.7 Ω

Qes0.37

Qms3.93

Qts0.36

Vas55.0 dm3 (1.94 ft3)

Sd531.0 cm2 (82.31 in2)

Xmax6.5 mm

Mms51.0 g

Bl17.7 Txm

Le1.48 mH

EBP156 Hz

Overall Diameter315 mm (12.4 in)

Bolt Circle Diameter296 mm (11.65 in)

Baffle Cutout Diameter282.0 mm (11.1 in)

Depth147 mm (5.79 in)

Flange and Gasket Thickness16 mm (0.63 in)

Net Weight8.2 kg (18.08 lb)

Shipping Weight9.0 kg (19.84 lb)

Shipping Box332 x 332 x 184 mm (13.07x13.07x7.24 in)

2 hours test made with continuous pink noise signal within the range Fs-10Fs. Power calculated on rated nominal impedance. Loudspeaker in free air.

Power on Continuous Program is defined as 3 dB greater than the Nominal rating.